It is often difficult to get a boisterous dog to sit properly for a picture.

Holding a ball or treat in one hand and a camera in the other in order to capture the animal's attention is a popular technique - but this leads to the dog's eyes being averted, or staring at the ball or treat instead of the camera.

But a San Diego company, Pooch Selfies, has solved this issue by creating an attachment for phones with a ball at the top - thus capturing the dog's attention for the perfect picture.